Extend wifi range from Mac Pro with Airport Extreme
I am trying to extend an office wifi, called "NetworkA" to my desk area. The signal comes from a Mac Pro (which is hard wired to our network) that has internet sharing enabled. I have an "AirPort Extreme Base Station A1354" and a "AirPort Time Capsule" at my disposal that I can use to use to extend the wifi. I did a hard reset of both devices.
When I connect the Extreme directly to the Mac Pro, "AirPort Utility" lists the device, but when I choose it and it starts to set up, I get the error "An unexpected error occurred. Try again.".
When I connect the Time Capsule directly to the Mac Pro, "Airport Utility" lists the device, but when I choose it and it starts to set up, the computer automatically switches to "NetworkB" (we have multiple wifis).
How can I extend "NetworkA"?? Thanks.